Chris Hayes hosts “All In with Chris Hayes” at 8 p.m. ET Tuesday through Friday on MS NOW. He is the editor-at-large at The Nation. A former fellow at Harvard University’s Edmond J. Safra Foundation Center for Ethics, Hayes was a Bernard Schwartz Fellow at the New America Foundation. His latest book is “The Sirens’ Call: How Attention Became the World’s Most Endangered Resource” (Penguin Press).